本SAE推荐规程将定义125 kbps高速CAN（HSC）协议实现的开放系统互连模型（ISO 7498）的物理层和数据链路层的部分。将规定网络的ECU和介质设计要求。需求将主要涉及CAN物理层的实现。 要求将侧重于高速CAN（HSC）实现的最低标准性能水平。所有ECU和介质的设计应满足某些组件级要求，以确保HSC实现系统级性能达到125 kbps。最低性能水平应由本文件第5节详细描述的系统级性能要求或特性规定。 本文件的设计应确保，如果满足第6节中定义的电子控制单元要求，则应可获得系统级属性。 本文件仅涉及可能在电子控制单元和介质级别进行测试的要求。本文件中不包含适用于集成到车辆中的HSC实施测试的要求。然而，符合所有ECU和介质要求将增加单独采购部件之间通信兼容性的可能性，并将大大简化将HSC通信系统成功集成到车辆中的任务。

This SAE Recommended Practice will define the Physical Layer and portions of the Data Link Layer of the Open Systems Interconnection model (ISO 7498) for a 125 kbps High Speed CAN (HSC) protocol implementation. Both ECU and media design requirements for networks will be specified. Requirements will primarily address the CAN physical layer implementation. Requirements will focus on a minimum standard level of performance from the High Speed CAN (HSC) implementation. All ECUs and media shall be designed to meet certain component level requirements in order to ensure the HSC implementation system level performance at 125 kbps. The minimum performance level shall be specified by system level performance requirements or characteristics described in detail in Section 5 of this document. This document is designed such that if the Electronic Control Unit requirements defined in Section 6 are met, then the system level attributes should be obtainable. This document will address only requirements which may be tested at the ECU and media level. No requirements which apply to the testing of the HSC implementation as integrated into a vehicle are contained in this document. However, compliance with all ECU and media requirements will increase the possibility of communication compatibility between separately procured components and will greatly simplify the task of successfully integrating a HSC communication system in a vehicle.